Universal binary support in scons on mac

[alex25]

alex25, if you don't like the default values, you can always change them when running scons:

i never really liked scons (more used to makefiles) so i prefer editing the files themselves. actually, this is exactly one of the reasons i hate scons: running it with extra options shouldn't really be persistent across options. i am sure at some point i'll forget i ran scons with the extra options and then i'll try to figure out, in vain, why it is installing things where it does. to each its own, i guess.

--alex--